49556009 has 4 divisors (see below), whose sum is σ = 52164240. Its totient is φ = 46947780.

The previous prime is 49555999. The next prime is 49556021. The reversal of 49556009 is 90065594.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90065594 = 2 ⋅45032797.

It is a cyclic number.

It is not a de Polignac number, because 49556009 - 2⁴ = 49555993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49556029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304087 + ... + 1304124.

It is an arithmetic number, because the mean of its divisors is an integer number (13041060).

Almost surely, 2^49556009 is an apocalyptic number.

It is an amenable number.

49556009 is a deficient number, since it is larger than the sum of its proper divisors (2608231).

49556009 is a wasteful number, since it uses less digits than its factorization.

49556009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608230.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 49556009 is about 7039.6029007324. The cubic root of 49556009 is about 367.3094549567.

The spelling of 49556009 in words is "forty-nine million, five hundred fifty-six thousand, nine".